摘要
绿豆幼苗下胚轴质膜存在有能氧化ＮＡＤＨ和还原Ｋ３Ｆｅ（ＣＮ）６的氧化还原系统。其最适ｐＨ为７．５，最适温度为４０℃，去垢剂ＴｒｉｔｏｎＸ－１００对膜制剂的氧化还原活性有促进作用。外源电子供体ＮＡＤＨ和电子受体Ｋ３Ｆｅ（ＣＮ）６的加入可促进下胚轴组织的Ｈ＋分泌。水分胁迫下活体质膜和离体质膜的Ｋ３Ｆｅ（ＣＮ）６还原活性都下降，变化趋势相似。
The redox system which can oxidize NADH and reduce K 3Fe(CN) 6 is present in the plasma membrane of mungbean seedling hypocotyl,with its best pH value being 7.5 and optimum temperature 40℃.PM rdox activities are activated upon additon of 0.05% Triton X-100. Application of electron donor NADH and electon receptor K 3Fe(CN) 6 can enhance H + extrusion of mungbean seedling hypocotyl.Under water stress the abilties of PM both in vivo and in vitro to reduce K 3Fe(CN) 6 are decreased and their changes are similar.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第1期78-82,共5页
Agricultural Research in the Arid Areas
基金
国家自然科学基金
关键词
绿豆
氧化还原系统
水分胁迫
mungbean( Phaseolus radiatus L.)
redox system
water stress
